Carteret Library patrons in good standing can use their cards at the following libraries:
| BERKELEY HEIGHTS | 908-464-9333 | NEW BRUNSWICK | 732-745-5108 |
| CLARK | 732-388-5999 | NEW PROVIDENCE | 908-665-0311 |
| CRANBURY | 609-655-0555 | NORTH BRUNSWICK | 732-246-3545 |
| CRANFORD | 908-709-7272 | OLD BRIDGE | 732-721-5600 |
| DUNELLEN | 732-968-4585 | PERTH AMBOY | 732-826-2600 |
| EDISON | 732-287-2298 | PISCATAWAY | 732-463-1633 |
| ELIZABETH | 908-354-6060 | PLAINFIELD | 908-757-1111 |
| FANWOOD | 908-322-6400 | PLAINSBORO | 609-275-2897 |
| GARWOOD | 908-789-1670 | RAHWAY | 732-388-0761 |
| HIGHLAND PARK | 732-572-2750 | RED BANK | 732-842-0690 |
| HILLSIDE | 973-923-4413 | ROSELLE | 908-245-5809 |
| JAMESBURG | 732-521-0440 | ROSELLE PARK | 908-245-2456 |
| KENILWORTH | 908-276-2451 | SAYREVILLE | 732-727-0212 |
| LINDEN | 908-298-3830 | SCOTCH PLAINS | 908-322-5007 |
| LONG BRANCH | 732-222-3900 | SOMERVILLE | 908-725-1336 |
| MANVILLE | 908-722-9722 | SOUTH AMBOY | 732-721-6060 |
| MATAWAN | 732-583-9100 | SOUTH BRUNSWICK | 732-329-4000 |
| METUCHEN | 732-632-8526 | SOUTH PLAINFIELD | 908-754-7885 |
| MIDDLESEX COLLEGE | 732-548-6000 | SOUTH RIVER | 732-254-2488 |
| MIDDLESEX LIBRARY | 732-356-6602 | SPOTSWOOD | 732-251-1515 |
| MILLTOWN | 732-247-2270 | SPRINGFIELD | 973-376-4930 |
| MONROE | 732-521-5000 | UNION | 908-851-5450 |
| MOUNTAINSIDE | 908-233-0115 | WESTFIELD | 908-789-4090 |